Add 40/21 and 40/25
1st number: 1 19/21, 2nd number: 1 15/25
40/21 + 40/25 is 368/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 25 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
40/21 = 40 × 25/21 × 25 = 1000/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
40/25 = 40 × 21/25 × 21 = 840/525 - Add the two like fractions:
1000/525 + 840/525 = 1000 + 840/525 = 1840/525 - 1840/525 simplified gives 368/105
- So, 40/21 + 40/25 = 368/105
In mixed form: 353/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21+40/25 40/21+80/25 40/42+40/25 40/21+40/50 40/63+40/25 40/21+40/75